English verb conjugation
COULD SQUIB

Regular verb: squib - squibed - squibed

Affirmation

Simple form	V-ing form
I could squib you could squib he could squib we could squib you could squib they could squib	I could be squibing you could be squibing he could be squibing we could be squibing you could be squibing they could be squibing
Perfect	V-ing perfect
I could have squibed you could have squibed he could have squibed we could have squibed you could have squibed they could have squibed	I could have been squibing you could have been squibing he could have been squibing we could have been squibing you could have been squibing they could have been squibing

Negation

Simple form	V-ing form
I couldn't squib you couldn't squib he couldn't squib we couldn't squib you couldn't squib they couldn't squib	I couldn't be squibing you couldn't be squibing he couldn't be squibing we couldn't be squibing you couldn't be squibing they couldn't be squibing
Perfect	V-ing perfect
I couldn't have squibed you couldn't have squibed he couldn't have squibed we couldn't have squibed you couldn't have squibed they couldn't have squibed	I couldn't have been squibing you couldn't have been squibing he couldn't have been squibing we couldn't have been squibing you couldn't have been squibing they couldn't have been squibing

Interrogative form

Simple form	V-ing form
could I squib? could you squib? could he squib? could we squib? could you squib? could they squib?	could I be squibing? could you be squibing? could he be squibing? could we be squibing? could you be squibing? could they be squibing?
Perfect	V-ing perfect
could I have squibed? could you have squibed? could he have squibed? could we have squibed? could you have squibed? could they have squibed?	could I have been squibing? could you have been squibing? could he have been squibing? could we have been squibing? could you have been squibing? could they have been squibing?

Interro-negative form

Simple form	V-ing form
couldn't I squib? couldn't you squib? couldn't he squib? couldn't we squib? couldn't you squib? couldn't they squib?	couldn't I be squibing? couldn't you be squibing? couldn't he be squibing? couldn't we be squibing? couldn't you be squibing? couldn't they be squibing?
Perfect	V-ing perfect
couldn't I have squibed? couldn't you have squibed? couldn't he have squibed? couldn't we have squibed? couldn't you have squibed? couldn't they have squibed?	couldn't I have been squibing? couldn't you have been squibing? couldn't he have been squibing? couldn't we have been squibing? couldn't you have been squibing? couldn't they have been squibing?